Fan-clark attachment.



A`. STAUFFER.

lFAN CRANK ATTACHMENT. APPLICATION FILED MAY|4.1915.

Patented J1111e 271916 FAN-CRANK ATTACHMENT.

specification of Leners Patent.

Application filed May 14, 1915. Serial No. 38,026.

To all whom t may; concern.'

Be it known that I, ALFRED STAUFFER, a citizen of. the United States,residing at Hoberg, .in the county of Lawrence and State of Missouri,have invented certain new and useful Improvements in Fan-CrankAttachments, of which the following is a specification.

My invention relates to an attachment for use in connection with thepivoted fan crank of a Ford automobile, for maintaining the fan beltunder continuous yielding tension.

An important object of the invention is to provide an attachment of theabove mentioned character, which may be quickly and conveniently appliedto the fan crank of a Ford automobile, without altering the constructionthereot'. i

Other objects and advantages of the invention will be apparent duringthe courseD ot the following description.

In the accompanying drawings forming a part of this specification and'inwhich like numerals are employed to designate like parts throughout thesame, Figure 1- is a side elevation of the engine in the Fordautomobile, showing my attachment ap plied to the fan crank, Fig. 2 is atransverse section taken on hne 2-2 ot F 1g. 1, with the attachment inside elevation, in use, and

Fig. 3 is a transverse sectional View taken on line 3-3 of Fig. 2.

In the drawings, wherein for the purpose of illustration is shown apreferred embodiment oi' my invention, the numeral 5 designates'a Fordengine as a whole. Pivotally mounted upon the crank case or other partofthe engine, as shown at is the usual fan bracket 7'. At its lower end,this fan bracket projects downwardly beyond the pivot 6, in the form of`an extension 8,. adapted to be engaged by van adjusting bolt 9, havingscrew-threaded engagement with an apertured lug 10, preferably formedintegralwith the crank case. 'lhe upper end of the fan bracket 7 has ahorizontal tan shaft 11 suitably journaled therein, having a fan 12.rigidly attached to its 'forward end. This Lian shai't carries agroovcd pulley 1S, engagged by a fan belt 14A, engaging a grooved.pulley 1.5,vrigidly mounted upon the crank shaft lli of the engine.rlbis is the usual construction, in the Ford engine, and the 'belt .isordinarily tightened by screwing up the bolt 9, which swings the i'anbracket .7 upwardly. rIhis adjustment isrigid and ing one end thereofbent downwardly, as

shown at 18, and horizontally as shown at 19. The horizontal portion19`of 4this arm isprovided with an approximately U- shaped head 20, oneside of which is open for receiving the outer portion of the fan crank7.

head 20 thereto. In this manner the head may be detachably and rigidlymounted upon the fan bracket, in a convenient and expeditious manner.The arm 17 is provided nearfits tree end with notches or openings '22,yfor receiving the hooked end of a suitably stili retractile coil spring23, having its lower end hooked for engagement with the boltl 9, asshown.

With the 'arm 17 secured to the fan bracket 7, and the spring 23connecting the free end otl the arm'17, and ,the bolt 9, it is obviousthat the spring 23 exerts a continuous yielding upward pressure upon thefan bracket, whereby the fan belt 14 is retained under a continuousyielding tension, thus preventing the same from slipping.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken a preferred example of the same, and thatvarious changes in the shape, size, and arrangement oi parts mayberesorted to without departing lrom the spirit 'of the invention or thescope of the subjoincd claims. v

Having thus described the invention, I claimi l 1. The combination withu. pivotcd bracket, of an adjusting bol! to limit the swinging movementof the bracket'in one dinection, a pulley carried by the bracket, a beltengaging the pulley, an arm arranged above thevbrackct and having meansfor securing it to the bracket, and a retractile coil spring connectingthe arm and adjusting bolt.

2. 'lhe combination with a pivoted bracket, of a pulley carried by thebracket, a belt to engage the pulley, an arm having a head to receive aportion of the bracket', means to hold the bead in place upon the TheU-shaped head is provided I with a clamping screw or bolt 21, forengagenient with the fan bracket 7, to lock-the Patented June 2*?,5.9.16.

ahi

17. The combination with n pivotec braciot, m'f :L puiey carried by thebracket, uvm; engaging the pulley, am. arm arranged www ne @racket andhavmg means t0 sown@ it who the bx'ncke, and a retractile AGoi Sp1-1mgconnected with the arm to move in one diyswiion.

'in 'esmony whereof my Signatura wem@ .of two witnesses.

